<script setup>
import { User, Lock } from '@element-plus/icons-vue'
import { ref } from 'vue'
import { ElMessage } from 'element-plus';

//控制注册与登录表单的显示， 默认显示注册
const isRegister = ref(false)
// 定义数据模型
const registerData = ref({
    username: '',
    password: '',
    rePassword: ''
})

// 校验密码函数
const checkRePassword = (rule, value, callback) => {
    if (value === '') {
        callback(new Error('请再次输入密码'))
    } else if (value !== registerData.value.password) {
        callback(new Error('两次输入的密码不一致'))
    }else {
        callback()
    }
}

// 定义表单验证规则
const rules = {
    username: [
        { required: true, message: '请输入用户名', trigger: 'blur' },
        { min: 5, max: 16, message: '长度在 5 到 16 个字符之间', trigger: 'blur' }
    ],
    password: [
        { required: true, message: '请输入密码', trigger: 'blur' },
        { min: 6, max: 16, message: '长度在 6 到 16 个字符之间', trigger: 'blur' }
    ],
    rePassword: [
        { validator: checkRePassword, trigger: 'blur' }
    ]
}

// 调用后台接口，完成注册
import { userRegisterService } from '@/api/user.js'
const register = async() => {
    // registerData 是一个响应式数据，需要.value 获取数据
    let result = await userRegisterService(registerData.value);
    /* if (result.code === 0) {
        // 注册成功，提示用户
        alert(result.msg ? result.msg : '注册成功')
    } else {
        // 注册失败，提示错误信息
        alert('注册失败')
    } */
//    alert(result.msg? result.msg : '注册成功')
ElMessage.success(result.msg ? result.msg : '注册成功')
}



// 复用注册表单的数据模型
// 表单数据校验
// 登陆函数
import { userLoginService } from '@/api/user.js'
// 错误写法：import {userRouter} from 'vue-router'
// 正确写法如下
import { useRouter } from 'vue-router'

const router = useRouter()

const login = async()=>{
    // 调用接口，完成登录 
    let result = await userLoginService(registerData.value)
    /* if(result.code === 0){
        alert(result.msg ? result.msg : '登录成功')
        // 登录成功后，跳转到首页
        // 这里可以使用路由跳转到首页

    }else{
        // 登录失败，提示错误信息
        alert(result.msg ? result.msg : '登录失败') 
    } */
    //   alert(result.msg? result.msg : '登录成功')
ElMessage.success(result.msg ? result.msg : '登录成功')
    // 登录成功后，跳转到首页
    // 这里可以使用路由跳转到首页
    // 例如：this.$router.push('/')
    // 需要在组件中引入 useRouter
    router.push('/')
}

// 定义函数，用来清空数据模型的数据
const clearRegisterData = () => {

    registerData.value = {
        username: '',
        password: '',
        rePassword: ''
    } 

}
</script>

<template>
    <el-row class="login-page">
        <el-col :span="12" class="bg"></el-col>
        <el-col :span="6" :offset="3" class="form">
            <!-- 注册表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-if="isRegister" :model="registerData" :rules="rules">
                <!-- logo图片 -->
                <div class="logo-wrapper">
                    <img src="@/assets/logo.png" alt="logo" class="logo-img" />
                </div>
                <el-form-item>
                    <h1>注册</h1>
                </el-form-item>
                <el-form-item prop='username'>
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
                </el-form-item>
                <el-form-item prop='password'>
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="registerData.password"></el-input>
                </el-form-item>
                <el-form-item prop='rePassword'>
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入再次密码" v-model="registerData.rePassword"></el-input>
                </el-form-item>
                


                <!-- 注册按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="register">
                        注册
                    </el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = false;clearRegisterData()">
                        ← 返回
                    </el-link>
                </el-form-item>
            </el-form>
            <!-- 登录表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-else :model="registerData" :rules="rules">
                <!-- logo图片 -->
                <div class="logo-wrapper">
                    <img src="@/assets/logo.png" alt="logo" class="logo-img" />
                </div>
                <el-form-item>
                    <h1>登录</h1>
                </el-form-item>
                <el-form-item prop='username'>
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
                </el-form-item>
                <el-form-item prop='password'>
                    <el-input name="password" :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="registerData.password"></el-input>
                </el-form-item>
                <el-form-item class="flex">
                    <div class="flex">
                        <el-checkbox>记住我</el-checkbox>
                        <el-link type="primary" :underline="false">忘记密码？</el-link>
                    </div>
                </el-form-item>



                <!-- 登录按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="login">登录</el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = true;clearRegisterData()">
                        注册 →
                    </el-link>
                </el-form-item>
            </el-form>
        </el-col>
    </el-row>
</template>

<style lang="scss" scoped>
/* 样式 */
.login-page {
    height: 100vh;
    background-color: #fff;

    .bg {
        // background: url('@/assets/HINONG-LOGO.png') no-repeat 60% center / 240px auto,
        // background: url('@/assets/logo.png') no-repeat 60% center / 240px auto,
        background: url('@/assets/login_bg2.png') no-repeat center / cover;
        border-radius: 0 20px 20px 0;
    }

    .form {
        display: flex;
        flex-direction: column;
        justify-content: center;
        user-select: none;

        .title {
            margin: 0 auto;
        }

        .button {
            width: 100%;
            background-color: #5cb648 !important; // 更暗一点的绿色
            border-color: #5cb648 !important;
        }

        .flex {
            width: 100%;
            display: flex;
            justify-content: space-between;
        }

        .logo-wrapper {
            width: 100%;
            display: flex;
            justify-content: center;
            margin-bottom: 16px;
        }
        .logo-img {
            height: 120px; // 再放大logo
            object-fit: contain;
        }

        // .el-link[type="primary"] {
        //     color: #7ed957 !important;
        // }
    }
}
</style>